Reforming catalysts with tuned acidity for maximum aromatics yield

Abstract

One exemplary embodiment can be a catalyst for catalytic reforming of naphtha. The catalyst can have a noble metal including one or more of platinum, palladium, rhodium, ruthenium, osmium, and iridium, at least two alkali metals or at least two alkaline earth metals, or mixtures of alkali metals and alkaline earth metals and a support.

The invention claimed is:  
     
       1. A catalyst for catalytic reforming of naphtha, comprising:
 a) a noble metal comprising one or more of platinum, palladium, rhodium, ruthenium, osmium, and iridium; 
 b) a mixture of two or more alkali metals; and 
 c) a support. 
 
     
     
       2. The catalyst according to  claim 1 , wherein the mixture of alkali metals comprises lithium and potassium. 
     
     
       3. The catalyst according to  claim 1 , wherein the catalyst comprises from 50 to 500 wppm of said alkali metals mixture. 
     
     
       4. The catalyst according to  claim 1 , wherein the catalyst comprises from 100 to 400 wppm alkali metals mixture. 
     
     
       5. The catalyst according to  claim 1 , wherein said alkali metal comprises mixtures of lithium, sodium, potassium, rubidium and cesium. 
     
     
       6. The catalyst according to  claim 1 , wherein the catalyst further comprises a Group 14 metal of the Periodic Table. 
     
     
       7. The catalyst according to  claim 1 , wherein the catalyst further comprises tin. 
     
     
       8. The catalyst according to  claim 7 , wherein the catalyst comprises no more than about 5%, by weight, tin. 
     
     
       9. The catalyst according to  claim 1 , wherein the catalyst further comprises a halide. 
     
     
       10. The catalyst according to  claim 9 , wherein the halide comprises chloride. 
     
     
       11. The catalyst according to  claim 1 , wherein the support comprises an alumina. 
     
     
       12. A catalyst for catalytic reforming of naphtha, comprising:
 a) platinum; 
 b) a mixture of two or more alkali metals; 
 c) chloride; and 
 d) a support. 
 
     
     
       13. The catalyst according to  claim 12 , wherein the catalyst further comprises a Group 14 metal of the Periodic Table.